Very Good,No Highlights or Markup,all pages are intact.

Angel-in-training Ella and her friends try to save sports day in this fourth magical book of the whimsical Angel Wings series! It’s nearly the end of the semester and Ella and her angelic classmates are desperate to get their sapphire halos. Ella is so close, but when she’s naughty and has halo points deducted from her card, it feels as though she’ll never get her glistening halo. At least she has sports day to look forward to! But then the school’s water supply is jammed, and it looks like sports day is going to be cancelled. Can Ella find a way to save sports day, get the water supply back, and earn her sapphire halo?

When it looks as though sports day will be cancelled due to a blockage in the school's water supply, Ella tries to find a way to save sports day and earn her sapphire halo in the process.

We live in a world of optical marvels - from the commonplace but beautiful rainbow, to the rare and eerie superior mirage. But how many of us really understand how a rainbow is formed, why the setting sun is red and flattened, or even why the sky at night is not absolutely black? This beautiful and informative guide provides clear explanations to all naturally occurring optical phenomena seen with the naked eye, including shadows, halos, water optics, mirages and a host of other spectacles. Separating myth from reality, it outlines the basic principles involved, and supports them with many figures and references. A wealth of rare and spectacular photographs, many in full color, illustrate the phenomena throughout. In this new edition of the highly-acclaimed guide to seeing, photographing and understanding nature's optical delights, the authors have added over 50 new images and provided new material on experiments you can try yourself.